Cathode structure including barrier for preventing metal...

Details Cathode structure including barrier for preventing metal... Cathode structure including barrier for preventing metal...

2004-01-12

2008-08-19

Patel, Nimeshkumar (Department: 2879)

Electric lamp and discharge devices

Electrode and shield structures

Indirectly heated cathodes

C313S34600R, C313S337000, C313S270000, C313S037000

Reexamination Certificate

active

07414356

ABSTRACT:
A cathode structure comprises a heater including a columnar ceramic body and a heating wire that is partially buried in the ceramic body, and a cathode unit disposed at a first end surface of the ceramic body. The heating wire leads out from a second end surface of the ceramic body.

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